From d1daeabf0da5bfa1943272ce508e2ba785730bf0 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Tue, 10 Jun 2008 10:20:53 -0500 Subject: [PATCH] [SCSI] sr: fix corrupt CD data after media change and delay Reported-by: Geert Uytterhoeven If you delay 30s or more before mounting a CD after inserting it then the kernel has the wrong value for the CD size. http://marc.info/?t=121276133000001 The problem is in sr_test_unit_ready(): the function eats unit attentions without adjusting the sdev->changed status. This means that when the CD signals changed media via unit attention, we can ignore it. Fix by making sr_test_unit_ready() adjust the changed status. Tested-by: Geert Uytterhoeven Cc: Stable Tree Signed-off-by: James Bottomley --- drivers/scsi/sr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 7ee86d4a76..c82df8bd4d 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -178,6 +178,9 @@ int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr) the_result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, sshdr, SR_TIMEOUT, retries--); + if (scsi_sense_valid(sshdr) && + sshdr->sense_key == UNIT_ATTENTION) + sdev->changed = 1; } while (retries > 0 && (!scsi_status_is_good(the_result) || -- 2.39.5